Abstract:
:Moyamoya disease is an idiopathic human cerebrovascular disorder that is characterized by progressive stenosis and abnormal collateral vessels. We recently identified mysterin/RNF213 as its first susceptibility gene, which encodes a 591-kDa protein containing enzymatically active P-loop ATPase and ubiquitin ligase domains and is involved in proper vascular development in zebrafish. Here we demonstrate that mysterin further contains two tandem AAA+ ATPase modules and forms huge ring-shaped oligomeric complex. AAA+ ATPases are known to generally mediate various biophysical and mechanical processes with the characteristic ring-shaped structure. Fluorescence correlation spectroscopy and biochemical evaluation suggested that mysterin dynamically changes its oligomeric forms through ATP/ADP binding and hydrolysis cycles. Thus, the moyamoya disease-associated gene product is a unique protein that functions as ubiquitin ligase and AAA+ ATPase, which possibly contributes to vascular development through mechanical processes in the cell.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Morito D,Nishikawa K,Hoseki J,Kitamura A,Kotani Y,Kiso K,Kinjo M,Fujiyoshi Y,Nagata Kdoi
10.1038/srep04442subject
Has Abstractpub_date
2014-03-24 00:00:00pages
4442issn
2045-2322pii
srep04442journal_volume
4pub_type
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